How can I fix these?

Years ago when I was a kid I managed to get some spray paint on the roof of a Virginian Train master. My dad suggested using a little olive oil on the roof and let it soak for several hours. Well it worked very well, but you have to remember that the roof on this engine was not painted. I would be very cautious with painted surfaces as the oil might also affect them.

Will do thanks guys!!!!!

Chip, do you know if the paint is solvent or oil base? Also before buying another brand of trucks compare them with what you have. Some trucks have the pivot over the center axle and some over one of the outer axles. Also check to see if the bolster is close to the same height. Lionel trucks tend to have a raised bolster and fit right to the floor while other trucks have a prototypically flat bolster and mount to a frame member.

Pete

It says water soluble, and is the Woodland Scenics Earth Brown Undercoat paint.

Here is a picture of the car:

You complain about the coupler, yet there is no closeup of the truck and coupler.  Also, you should put it on a piece of track and take a side view to indicate how close the coupler is to the 3rd rail.

From what is posted, it's pretty hard to offer any real opinion of what the issue might be.

I failed to mention the coupler plunger was removed before I took the pictures.

Working fine now, as I fixed some uneven track sections, just need to clean that brown paint off.

I just added LED Warm White's to these too.

Chip...

It's my understanding that the WS Earth undercoat is not really a paint.  By that I mean it has no binders in it.  It is water soluble...even after drying.  WS's colors are meant to be a form of stain.  They soak into their plaster products...rock castings, smooth-it road plaster, casting plaster, hydrocal, etc. They can be 'moved' or 'lightened', so to speak, by further applications of water.

That said, I would approach the brown boo-boo with the simplest of means first...pure water.  Perhaps then a drop of detergent might help, as a next step.

Better yet....call the helpful folks at Woodland Scenics!!  Ask to talk with a techie familiar with their colorants.  Tell him/her of your situation.  I'm sure they'll give you the best advice knowing the composition of their products.

It's been said before, and I can personally testify....the WS folks are very helpful and will talk you through any problem with their products.

After all, as the cliche' goes, "Get it from the horse's mouth!...Not the other end!"

Meanwhile, back at the ranch...

KD

Thanks for your help KD, will try water and if that doesnt work I will call them.

I would try naphtha before alcohol, it's less likely to take off the shell paint.

I found out from Woodland scenics that warm soapy water and a tooth brush should easily remove the earth brown from the car. I hope that helps you out. Good luck.