Hi, i've purchased parts from Batman (David Ables /
batman@whitneytx.net) in the past with success, seems he's very busy with other projects from what i read in other posts, however i've been in contact with him within the last month or so, emails probably the best method. Sounds like you're talking about Batman's Hop Up Kit - a good investment for the money from what i understand. I'd go that route with my TECs as well however you've got the send him the cylinder for the machine work - the shipping would break me (i'm in Canada).