THE BEST THING TO DO IS LEARN HOW TO BUILD THE ENGINE YOURSELF. TRUST NO ONE CHECK EVERYTHING ONCE OR TWICE OR THREE.

I WAS IN A SIMULAR PLACE YOU WERE. I BOUGHT ALL MY OWN SUNNEN CHECKING TOOLS, VALVE GRINDER, SEAT,ETC. I DO NOT WANT TO DEPEND ON ANYONE TO CHECK MY MEASUREMENTS.

I WAS TIRED OF NOT CHECKING PRIME AND LOOSEING IT TO HALF A ENGINE, BOLTS NOT TORQUED PROPERLY, BOLTS COMING LOOSE. THE LIST GOES ON. I KNOW MORE MY ENGINE AND HOW TO BUILD IT THAN THE GUY I HAD DOING IT AND I KNEW HIM FOR A LONG TIME.