LOL,wow lots of opinions on here and some of them could cost you alot of money in repairs. :sad: Ok at 180 compression you WILL need at least 50/50 mix or straight 108 race gas depending on timing etc..With the squish you have you do NOT want to run more base gasket thickness. Your high compression, IF your guage is accurate is because of your almost sea level elevation, 4mm stroker plate and crank, extra crankcase volume, and NO porting. You may need to run 23cc or get the cyls. ported to lower the compression. Oh and in time yes it will show signs of detonation w/180 compression if running pump gas and advanced timing. Please call me if you have any questions...