Yeah every time you want to change some thing you have to modify some thing else..
Wolfgang from Rc-Tech Germany said to cut the alloy upper A-arm 5mm's shorter
where the turn buckle screws in...Plastic to too alloy is different.....I chose to use shorter turn buckles....But I srill had to use a washer before the drive cup goes into
the rear upright....I can draw you a picture....Don't think you can see it from photo
maybe you can see the washer.....I will have to check my thread for photo's
I know always some thing....Slawhammer
PS

k VooDoo..number..FGstd0610/03...short turn buckle 36mm long for upper Alloy A-Arm
Next number...FG6071/01 is the normal turn buckle M8x61mm long....for the plastic stuff.....
I went with the shirter turnbuckle my self....But I am using FHMT rear end drive parts
Not FG diff internals or Fg diff inner cups..Fg dog bones..Fg outer drive cups...
My FHMT dog bones are longer..there 108mm vs 96 mm for FG........
Now I am using the Fg alloy A-arms (Fg4474) the Fg alloy rear up rights..that are sloted..same as you heve for rear up rights......Not sure on your lower arms...for the eyes or turn buckle there
to bring it in closer......