Started having a clutch problem a couple of months ago during a rainy spell. When my TJ had been sitting for a while and I would first take off, I got a shuddering as I was taking off in 1st gear then it would stop after the clutch heated up. It's still doing it and it's been dry.....can't blame it on that anymore. After I have started off once or twice, it doesn't do it anymore. Any ideas?