Currently I have an Upton Gary Karr hybrid that I am totally in love with. I have the cash to upgrade and put a carved back on (i want plywood sides for the intense winters of potsdam) Do you guys think it will be worth it? (For feel it is to me, I just am totally in love) Will it be a candidate for a low c extension? Will it be bad for my bass? On a different note I'm also looking to upgrade my endpin, I am a strange hight and seated it doesn't help. Do people play bent endpin seated? Can I get a custom endpin made?