3xx radio issues on verizion

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I have read all the threads about slow radio signal on vzw with a 3xx radio and tried all the posted soultions including refreshing the nam programming and I'm still plagued with this issue and awaiting my 3rd replacement device. Anything that involves a nam change ##778 or any version of an ota provisioning puts my phones in a 30-45 minute searching for signal. My 1st device worked ok with dcd 3.04 and 3.35 radio for a few weeks but an ota prl update a few weeks later caused it to lose radio lock on the towers and the radio would lose signal after a soft reset and go back into the 30-45 min search. The 2nd device which was essentailly brand new 10 min lifetime talk did the same as soon as I got it and I have tested nochem 5060 and dcd 3.04 with the 3.35 and 3.37 radio with the same results (all lose radio signal after soft reset on 2nd device). A close friend that works in data tech support checked my account (knowing im using rev a radio) for the correct features and at the switch and everything is correct. Any other data device 6700 etc works perfect and the stock 1.30.60 vzw radio works perfect. My mogul to vzw conversion for a back up running the same radio 3.35 and dcd 3.04 does not have the same radio issue that my xv6800's do. Does anyone know if there is a slight hardware difference in these or something else to help acquire signal faster and have the radio survive a soft reset with a signal? FYI. I'm in an area with very strong signal coverage so thats not an issue.