They are most probably not. Mainship specified a reduced stroke actuator for many models, the standard Bennett travel is 2-1/2" and the Mainship "special" was 1-3/4'
This was just discussed on the Mainship Yahoo site, there is a simple modification you can do the change the actuator to standard travel, if you are out of the water.
Originally Posted by George Harmon
Wondering if the trim tabs on my Mainship Pilot 30 II are reaching their full range of travel up and down. Does anybody know the distance the aft edge of the tab travels from full down to full up? Can't seem to find this info anywhere on line.