Congrats on your maiden c/f, and thx for the additional supporting info Tam.

Out of interest I had HiTec 5245MG servos available (left over from an F3J glider that they wouldnt fit in!) so i used these instead of the JR DS3421. However the specs are almost identical, they are very similar servos (I even wonder if underneath the case they are perhaps identical). Although given a choice I would generally feel more comfrotable with JR/Futaba servos in high performance models Ive found these HiTec digitals to be pretty good. Im using heavy ball links in the linkage for zero slop and will hookup as you say.

Incidentally the servo actually ius slightly wider at the back (like by 1-2mm!) than the servo bay can provide. This means the cover sits slightly proud of the stab halve. I was just going to modify the cover to fit this way anyone else had to overcome a similar problem. The alternative would be to use JR DS161 servos but im just not comfrotable that these would be man enough for the job.