If you have a "topside" conveyor, the top and bottom conveyors could become "de-synched" and do the same thing. Ed Popielarski QTA Machine 10 McLaren, Ste. D Irvine, Ca. 92618 949-581-6601 Ph 949-581-2448 Fx http://www.qta.net Ask about our BGA Reballing system! ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################