[issdaol (Phil)]

Hi All,

Recently acquired a TOA15 with the 4 inch focuser. Also purchased a Tak MEF-4 fine focuser upgrade.

The MEF-4 looks and feels very well built but I need a bit of quick advice on the fitment as I dont want to screw up my new TOA150 focuser housing and all the instructions are in Japanese LoL

The connection of MEF-4 to the focuser shaft looks very simple and straight forward. Essentially remove old knob and put on new knob and tighten down a couple of tension bolts.

The problem is the plate that connect to the bottom of the focuser housing and to the MEF-4. There is no second screw hole on the bottom of my housing. Only one. So it looks like I would have to drill into the outer casing.

However the supplied screw does not look like a self tapping type screw.

So anyone that has fitted one before I would be grateful for the advice.