I would like to replace the two teak trimrings on the inside of the cockpit. They are old and really beat up. I thought I would replace them with the white plastic rings. Is it hard to get these off without breaking something? Also between the bottom of the trim rings and the seats, the fiberglass (or gelcoat) is flacking in places. What would be the best way to repair this problem. Has this happened to anyone else, or am I just lucky? ThanksDale