Hello...im having problems with the presets in my variax 600. On the les paul (lester preset on the variax) it keeps on switching into a strat model for some reason. When I turn it on or plug it in (via the Vdi cable or the line 6 power supply), it sounds good for 5 minutes and then it starts switching between the Lester (on the lester position) and a sparke(strat) this keeps on going for 5 more minutes untill it settles into the sparkle(staying into the lester position in the variax). The same thing happens with the acoustic 12 string, it keeps on glitching between the 12 string and the 6 string untill it remains as a 6 string after 5 minutes. Ive tried reflashing several times and the same thing keeps on happening. The other day I checked the battery compartment and I realized I had dead batteries for too long (there was a bit of white powder coming off them) I took them off and cleaned the compartment a bit. Maybe this affected the circuit. Has anybody has had the same issues, I really need your help, since im from SouthAmerica,Chile and there are no authorized Variax centers here or nobody who understands how to fix a variax. Thank you fellow musicians..I would trully apreciate your feedback!!