My local Caddy dealer has quoted me $500 to order and install a UUC shifter on my 'O5 V. My only concern is its effect on the warranty down the road. Is it fair for me to request an assurance that installing the shifter in no way effects my warranty? Should I expect the Caddy dealer to be OK with this? I just don't want them laying the blame on the UUC for a shot differential in 6 months.