clamshell for C102f

I have a C102f that I mount on a TeleVue Gibralter Mount. I use the original mounting rings that came with the scope, but have to use them upside down becasue the tightening screws which are ordinarily on the bottom for mounting are too wide to fit in the cradle of the Gibralter. I would like to have a clamshell that would accomodate the C102f, but I understand the TeleVue 4" clamshell is not wide enought to accomodate the C102f. Does anyone know if anyone makes such a clamshell that would work? Thanks.

Chris

See if you can get some dimensions from
someone on a Takahashi FS102 or TSA102
clam shell. Don't know if it would fit
-- just a possibility.
http://www.buytelescopes.com/product.asp?t=&pid=1571&m=35