Never experienced any problems with CCGA's either in production or replacement. I did hundreds of these things with the SRT because of an upgrade. It took almost six months for all the replacements at 24 per board with 1200 columns. Only minor problem was with sorting out GSM placement accuracy concerning the vision system. Really had to watch column alignment though as you say. Other than that, no problems. I guess, as I don't clearly remember, the force issue was resolved as a function of machine programming but the parts were so heavy anyway, I don't think it mad a difference as they just sunk into the paste and aligned very well. Interesting stuff, eh Gaby? Earl --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------