It appears William Optics have just released a new field flattener for their FLT & GT102 scopes with the 3.5" focusers.
http://www.williamoptics.com/wo_shop...product_id=760
Not many details about it yet but from the images it looks like it has nice, clear preset positions for the various scopes it was designed for.
Keen to see some reviews on this
There's also a new drawtube adapter for the Flat4 on their website too for anyone who might be interested.
Bret