M_Boats: Boom length

Hello M list, Been looking at the pictures on the M-15 site and have come to the conclusion that the booms on new M-15s are longer than the boom on my M-15. I wonder, can everybody else get their boom into their cabin? Mine will go inside by about an inch. I'm asking because either my sail is a bit large, or my boom is a bit short. When I pull my main outhaul up tight there is barely any space at all left between the leech cringle and the eye at the end of the boom. In fact, it might be that I could pull the outhaul further (not much) if I had more room. Haven't measured the boom yet, guess I should have before I asked the question. Rik