Learn how to flamepolish, heat it gentle and push down the high spot.. don't use your fingers to push or your fingerprints will remain forever in the plastic..

Seems pretty common their on bsd. Not much u can do but possibly smooth it out somewhat with some heat. Also I believe there were a run of ramps made by someone here on the forum. Good luck ..its a great game. You cld also just play it and not worry about it .

I would suggest to remove the decals first. And then sand it with some 600 grit to get it to grade, then 800, 1000 etc, then buff it out with compounds, then re-attach the decal.

Check with Freeplay40 to see if he can make a ramp for you.

Now I see the pictures - ignore my previous comment.
Don't heat it more, once it shows these bubbles you only damage it more when heating it.

Sanding it down and filling from below is an option then.

Fill it from below before any sanding.

Ive used UV Nail Gel, with Clear Nail Fiberglass patch, when needed.
Both a couple bucks off ebay.
I then self leveled with Everbrite, about 8 coats, and this clearcoat shined up the sanding dullness.
Small Mylar patch and hardly noticeable.

I sanded as mentioned. Tacked the fiberglass mesh with uv from the back, a very small piece.
Dripped in UV Gel, lower than the ramp height and cured. Then slowly built up layers of self leveling clear.
This took a couple days, and I suppose I could have used more UV gel to shorten that time.

I tested this method on an old ramp, and did better the second time.
UV Gel, varies a bit from overseas, but id highly recommend you test first, as I hate to suggest something that
may not work the same for everyone.

Like this product:
ebay.com link: YAYOGE14G Clear Resin Hard Building UV LED Gel For Nail Extension Manicure

ebay.com link: Manicure Tool Nail Fiber Extension Fiberglass Builder Gel Fake Nails Glass Fiber

Repros were made a few years ago, might be able to shake one loose from someone.

https://pinside.com/pinball/forum/topic/bsd-new-ramps/page/5

I had the same issue and I had pretty good luck fixing it. I recommend sanding only and working from the top. Start with a pretty heavy grit (120) and work back to like 400. Finish my flame polishing.

I put painters tape all around the “pimple” area to I really isolated the sanding.

If there is no noticeable hump , just work on the top-side. I don't think its possible to get it to the same shape as original. You only can hope to hide the damage. And doing the things I suggested will hide it well enough. You can leave the decal on if it wasnt damaged from the heat of the torch. In the future , remove the decals before using heat.

Decal is Last, if working from the bottom.
Lots of great advise, Tape around top, and use the tool of your skill set and need.
A very fine grinding cylinder on a hand held like from Harbor freight with slow light movements in opposite directions.
Depending on depth, and tools, a blade too.

We cant see it close up, or know your skill set, but the first step is to level, then decide on fill, and finish.
There is no one answer, or right answer over another.
Just remember any sanding etc, will dull. so Tape is your friend.

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Send a pm to Pinsider @pjm. He had all the topside plastic BSD ramps (with decals) reproduced a few years ago and may have some left over.

Gord