Entering Sub-Maps on the OW takes longer than usual - New question about classic piranhas

Something I need help with!

1. Any time I edit the Message Block/Level Names/Boss Sequence text, when I enter a sub-map in the overworld, it takes a a lot longer to enter than usual (it stays black for about 3x as long). I've edited text before and have never had this happen until now. Anything I can do other than move everything to a clean ROM?

Video: https://youtu.be/fBZh7oYlPXY

EDIT: Moved levels to a clean file (and nothing else), and it still does it!

2. I'm trying to make an invisible vine block that can't be touched until hit. I tried the one in the BLOCKS section of the site, but it didn't work for me.

I'm guessing I would need to change the 2nd LDA, but not sure what number to put there.

db $42
JMP MarioBelow
JMP Blank
JMP Blank
JMP Blank
JMP Blank
JMP Blank
JMP Blank
JMP Blank
JMP Blank
JMP Blank

MarioBelow:
LDA $7D
CMP #$80
BCC Blank
LDA #$1F - Change this one?
STA $1693
LDY #$01
Blank:
RTL

Thanks for any help!

I know know how to fix problem 1 but to problem 2: The first LDA loads Mario's speed. Changing this one is obviouslyx wrong i.e. your right about changing the value at the second LDA. The value you want to enter is the low byte (the yy of $xxyy) Map16 number of the block you want to activate. The star chain/ 1-up/ vine block is tile $011A so you change to change #$1F to #$1A.

The vine/star/1-UP block worked great! Thanks!

I added a video to the original post to show how long it takes to enter the Vanilla Dome, for example.

It does it both ways, unfortunately.

I just tried again inserting everything into a clean ROM one step at a time and messing with the messages, and it seems inserting my AllGFX.bin and ExGFX (80-8C) is what's causing it to do it.

EDIT: Moving a tile on the OW also seems to do it, not just editing messages!

I'm not an expert in helping people with roms but it might be the rom that you're using. LM does prefer .smc so if your rom is .sfc it might be what's causing it.

I'm using a .SMC, but it looks like the problem kinda fixed itself!

I just changed what I wanted in the overworld, saved it, then restored the ROM to before I did the change to the overworld, saved a level, and it worked for some reason!

Thanks for all the help!

EDIT: Nevermind. It didn't work after all. I'll just have to live with a spelling mistake.

EDIT: Is there a Hex Edit/Patch I could do to speed up the fade in and out to a submap/overworld map? I looked at the RAM Map and saw the following 2 addresses that may help: $7E1DE8 and $7EC800

Well, there is a hex editor tool, but you'll have to get some help on how to use it. I'm sure that someone will show what to look for.

The tool: http://www.smwcentral.net/?p=section&a=details&id=4625

I actually just moved everything over to a new ROM one step and patch at a time, and it works just like it should now. Thanks!

NEW QUESTION (Hopefully, my final one!):

I've added the classic pirahna patch and the stems are green in-game, but look like this in LM. Is this normal?

LM refers to its own table and not how the sprites looks like in-game (noted in the instruction). In order to change fix that in LM, open the Map16 editor and press Ctrl + Shift + Page-Down similar how you can enable to see the animated tiles on the 8x8 editor.
Now, you have to search for the piranha plant stem. These are tiles 0x8026 (regular) and 0x801B (upside down).
After you have fixed it, hold Ctrl + F9 so save the tiles. No, the save button doesn't work on the sprite display tiles.

Just as a side note: The sprite tiles for LM are saved on .m16 (first four pages) and custom sprites on .s16 (other pages).

Okay, got it. Thanks again!