Try to get him to design it... then build it yourself, or, if your'e too busy or not mechanically inclined then have someone do it... once drawn up you will see just how easy it is, for years I did it by hand... A set of plans will take out the guesswork and make it something to go thru with... I drew some ideas, some plans but never followed thru. CSCStang worked out some plans on Winisd, showed me some response curves and after I decided on one he sent them drawings over and it is like a motivator once you have the plans. They looked so good and he punched them out so quickly I felt some compensation was earned. That's up to Ya'll but once he was onboard it was fast! My old box is on the block as we type...