" I've sent him $4k ($2k for the castings, and another $2k for progress work) last summer." I sent Bob the first check last June and the second one last July. It's getting close to a year, so I'm not expecting an overnight deal. All I want is some communication on his part. He has time to post on Facebook, why not let a customer know where in the process his parts are? Maybe SS heads take more time, and since the 110-M castings get more CCs than the 559-M heads, maybe there is more development to them. Just a quick e-mail or phone call would be nice.