Don't bother.
Sell the manual and buy a dead CNC.

You have a machine that's currently worth about £900 ? you throw close to 2K at it and have a machine worth £800
Look for a BOSS 1 to 4 or an MDI machine. These were made as CNC, ballscrews, pressure oiling, a really nice quill where the ball screw is actually around the quill and not an add on that just wants to lever the quill sideways.

Downside of these machine which is in your favour is the electrics were crap, sorry make that $hit. Result is the iron is very good as ost have stood the last 15 years acting a shelf somewhere.

Beaver V5 here sold for £650

http://www.ebay.co.uk/itm/Beaver-V5-...-/182111147591

TOS CNC mill sold for £460 OK not working but that doesn't matter for a refit.

http://www.ebay.co.uk/itm/Tos-CNC-Mi...-/252353975743

You could have got 1/2 of that back reselling the controller.