gotta agree,2 sets of mains,,i did same thing,,,,,,,,wanna try a new lube for your cyl bores????total seal has a dryfilm lube for installation on a rebuild,,,,dont be scared,,if its good enough for a top fueler,its good enough for me,,,it looks like pencil shavings,,grey,,good stuff, rub it on thats it,,, :wink: ,,,dont know how many times i gotta say it,,if you are reusing pistons,,never never beadblast, baking soda is ok in a pinch,or walnutshells,,glassbeads gets trapped in pores,,comes out with heat and pressure(like whenyou finally start it),use gasket remover,in a can,,or that cold carb dip,,be careful w/ that stuff,it can stain some metals,,,,,,,i dip em,,scrub a little rinse,,inspect,and repeat if neded,tilli can see the orig machine marks in the pistons,,,,,,heh,,i been sayin i got like almost 5k in my tdi build?,,yea thats used pistons too,whew,they mic'ed up nice,,,,,,,,,,,,,,,,,make a priming tool also,,i can post a pic of that too if needed,,,,,,,,,just ask,i wont bite,,,, :wink: