[F00]

I have a Sonic Yin Yang bolt in my 2k1 STO and it is a real snug fit.

It is delrin and I know I'm not supposed to oil, but when I play it seems the bolt is so tight that it seems to hesitate and I chop a lot of paint. But when I put oil on the bolt the problem seems to go away.

Will the oil do any damage to the bolt?

And why the heck is the bolt so fat?

[kerdon]

Oil over the short term wont hurt it over the long term it may. Bolts are made to a general diameter to fit every autococker out there......they are variations in the bolt and in the bore of your gun.

[jjmorin85]

my warped sportz delron bolt fits perfect in my gun but is a total pain in the butt to get through my back block, i have to pull on it about as hard as i can to get it out of my gun. it goes in ok though. so i think just the back part of the delron was slightly swolen when i got it. i dont know if it would be ok to sand the back down a little or if i should continue to use it like this, because like i said, it fits perfect in my gun and performs flawlessly, just real hard to get out.

[ReTro Boy]

Prolonged exposure to oil or old paint that is not cleaned out will cause the delrin to swell...which would only worsen your problem.

[triple-c]

My friend had the same exact problem with his Yin-Yang Bolt. I took the o-rings of and now its smooth as butter! It still seals perfectly, no blow back at all.

[fullstretch]

get a dye bolt/block