Hi Peter,
I'm a new member of the forum, however, I have been following your posts on the design of the pylons with great interest.
I own a Gyrodec (Export Model) which I purchased new in 1989.
For some time, I have been considering up-grading the Adjuster and replacing the springs with the standard offering from Michell.
The benefits being the two piece Adjuster, and replacing some rather tired springs, which would have provided an improvement.
Being somewhat curious I searched the Net and noticed the Solid Air pylons, I thought they were rather expensive, and like you, felt they would offer even less lateral control than the existing spring arrangement, and then I came across your design.
Now that you have ironed out all the problems, and gone as far as you could reasonably expect to go, I would be very interested in purchasing the 'kit' of parts you are offering.
The only part of the 'kit' I would not be interested in is the ceramic ball for the spindle main bearing.
Please could you provide me with price details, delivery times, and any measurements you require.