cheers guys :-) soooo what im gathering from here is that 1mm squish on a fully built torqued down motor is good ? no problem with valve to piston clearance ? will do a full plasigauge test on a dry motor but im looking 1mm down to max .5 , its not being built to comute to work so just for fun and ive noticed the spacers do come in varieying thickness if needed , getting some good feedback on this much thanks lads :-)