well i just hit the gallon mark on my 5 port turbo engine. starting to race tune and started to get a loud grinding noise while idiling. i tore the engine down today and found the outer race of the rear bearing cracked. is this normal for these bearings to have problems so soon? i emailed russell @ Racefactor and hopefully he can get me a replacement bearing. kinda bummed about this but i have a half gallon on a 3 port r and hoping not to have the same issue