Installing transgo kit and my C2 piston looks cracked and want to replace while apart. mine is a 1st gen (w/bleed hole) can i use a 2nd gen (no bleed hole) as long as i use the right seal. Is it the same except for the hole, and should I drill that hole (think i read its a #60 bit / .040 hole). please help want to get this thing back together.