If that's all you can find wrong on a 12 year old boat, I would be worried about renegotiating!
Sound pretty harmless (although I'm from South Florida where we don't have freeze cycles). Just re-seal the hatch and seal the screws around the hatch and windlass (remove each screw, inject some silicone RTV or similar, replace screw).
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"Knot Easy" 2000 Horizon 240 Volvo 5.7GS /SX
tow: 2017 Honda PILOT EXL-AWD
prev. boats:
'87 Chaparral 198CXL 4.3 OMC Cobra
'69 Jetstar 16ft Ski Boat, 115hp Yamaha
'68 Aluminum Jon Boat, 3hp Sears
'64 Water Wings