Thanks for all the good info guys & a relief i don't have defective bearing issue ! ..Tim, that would be big end con rod split bearing shells ? ..Without any oiling holes or grease
fittings, consistant assurance of critical bearing lubrication seems "hit or miss", drip it down the mostly hidden bearing sides & hope nothing ever runs dry !! ... Initial running frequent bearing wear teardown checks might be a good idea to verify your particular lubricant type & application method is settled on. ..Yep, Gil..despite the bearing & gear backlash noise, it runs good ! ..Think i'll lower the fuel tank a bit to keep all tank levels running on mixer benturi suction to eliminate any possible full tank gravity flow fuel mixture variation effects. What a cool engine platform to try out various "improvement" H&M setup ideas !..Thx again, tom.