KDE AT600N-MBB-V2 Bearing Blocks & 600n DFC Problems

[jimbojetset]

Bought a set of KDE Bearing Blocks [AT600N-MBB-V2] from Fast Lad for my Trex 600N Pro but they don't fit due to my DFC head.

I did a little more digging and found on the KDE website it says they're not for 600n with DFC but is says nothing about this on the Fast Lad website.

So now I have 3 options...

1. do I modify my frame to make them fit (they need to be lowered in the frame by approx 5mm)

2. do I modify a standard main shaft and use a collar (this introduces a few other complications with swash link lengths)

3. do I sell them on at a loss.

I doubt it I can send them back as I don't have the original packaging...

I'm tempted to mod the frame but not sure about the consequences.... anyone any thoughts or ideas or even any experience making these bearings fit with a DFC head?

[pgkevet]

It seems a shame to go drilling holes in a perfectly good frame and to do that accurately you'ld really have to take it apart or spend ages making a jig to bolt into the original holes...
That leaves the option of a call to see FL's response and/or selling them on.
Anything else is just more trouble for the future

[jimbojetset]

Spoke to FL's and they are happy to accept return of the blocks without original packaging in return for store credit.... happy days.