My goodness there are a lot of beautiful models on that site really goes to show there are some really talented people about, myself i`m not on the same planet. The problem i faced was cutting through the bend at an angle if you can follow makes it narrower at the rear than the front a real tinsmith would have no problem but for me i did say tricky.
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You can see there is a continuous lug but not much help, going to have to move the servos back 1/4" so i think a bit of a strip is in order if at first---. do have things in mind so all is not lost.