Don't they sell all the little parts for these at FT?I have heard of small arcing from the insulator under the 510 block on base. Also the clone 510 pin would be suspect. I broke my clone 510 pin during a rebuild. The oem 510 pin fit in my FT clone, cost more then i paid for the atty. I have zero ohm changes with the oem 510 pin installed. Ahh, also put a steam tuners top cap/ drip tip combo on it. Great little atty, now.