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Mike

In article ,
says...
snip
Ideas?

Cheers, T i m

Can you set it up as you want it, then drill new holes about 30mm from
the end of the outer and add new bolts, suitably oriented, to stiffen
the end. Perhaps with shims slipped in, either metal shims or those
plastic shims that window fitters use. I expect they aren't very robust,
but they are cheap. They go in 1mm steps.