Where is your spin halyard clete? On the mast or on the front beam, starboard side? And are you using the "all in one" halyard/tack line or two separate lines?
One thing I don't like is having all my 'strings' on top of the tramp, I find I'm usually sitting or kneeling on...something...and that's why it won't set or snuff.
The Vipers run a lot of stuff under the tramp and out the lace up sides to keep the strings out of the way, but since my tramp sides are in a grooved plae in the hull, I can't run much under the tramp, just the halyard coming up from the snuffer sock.