My name''s Martin and I''m a ......
First of you are correct 3634 is a very competitive boat Your crew weight is at the upper end of where you would want but you should still be ahead of the boats you've mentioned Why not get a race coach or decent club sailor to have a look at your sailing from a power boat sure that would help Keeping the boat dead flat ( I.e. you should be able to let go the tiller and it doesn't move away from you) plus keeping the boat moving and not stuffing it up are a gd start Would invite you to wembley for a day but guess bit far
Feeling your pain. This could be me and my helm writing this post. We do enjoy sailing the boat and are hoping to get to the Bartley Open to see if we can gets some hints and tips.