I am looking to buy a 1985 Larson Citation 190 with a 140 Merc I/O. the finnish is realy dull, this may be from the currant owner not covering the boat. my question is how hard is it to buff out the paint to restore the gloss and or repairing the minor scraches and dings on the hull,also anything in perticular to check reguarding the motor prior to buying?