While building my 1/96 Thor Permit, I found it better to stainless steel allen bolts instead of the supplied screws for the wheel collars attatched to the dive planes and rudders. They use a bigger head so you can get real tight around the shaft so it will not come loose. Second, they won't rust or strip out like those tiny allen screws. If they are too long you can cut them down for a close fit. I find them much better.
Casey Thrower SC Member #1675
"Oh Lord, Thy sea is so large and my boat is so small"