Update: Well, after few email/ & conversations with Dave Patrick, it seems that the crash/flutter was a result of me partially not using the manufacturer supplied hardware, using inadequate servos & using a larger engine than the recommended size.

I am very pleased with DPM customer support as they could have easily ignored calls/not accepted any responsibility (as I was deviating from manufacturer specs etc) & not done anything about it. Dave responded to emails/calls pretty effectively & provided much insight/details into the reasons etc.

DPM has agreed to supply the replacement parts at a discounted rate/cost & I've placed the order. Will be buying good/digital servos & sticking to stock hardware etc. :-)

I hope Version2 lasts longer !!!!

--Arvind