What to use

I have a bunch of DUB city models and i've lowered them and its about time i start to shave them... so i took the tail lights out of my silverado model and tried to fill the gaps with a varietly of things

1) modeling glue - just evaporated
2) Mono - doesn't work, i dunno what i was thinging
3) Mono and modeling glue -

so now i'm getting annoyed... and instead of hunting for items that won't work... i decided to ask... so what would be the best material to fill the tail light gaps and body lines on my DUB city silverado???


Artsar