For me, the GB's have been an incentive to complete a model, I have always had trouble mainly because of too many projects going at once. I have a 1/250 U.S.S. Oregon that I have been working on (replaced the decks with real wood, P.E., and scratch items too numerous to list!) for about 10 years now, a 1/144 U.S.S. Harriet Lane, same thing, a set of 1/35 Prussians from the Franco-Prussian war,two years, Two 1/48 Focke-wulf 190's (Priller and his wingman) over a year, several other 1/48 aircraft, and my crowning non-achevement, a 1/35 Saburo Sakai figure that is going on 25 years!