I purchased a E3d lite6 and it seems to be rocking back and forth in my wades extruder mount. Currently the hotend is inside of the mount secured by traditional screws. I bored out a countersink for the collet to fit but the hotel still can move a couple of degrees. Has anyone experienced this and has a fix?

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Prusa i3 Rework - Ramps 1.4 - E3d Lite6 - Full Graphic LCD Controller

I had the same problem with my i3 rework Wades extruder. What i did was put a large metal washer,M10 I think, on top of the hot end and then made paper ones and added them till it had a tight fit. I think that there are modified extruder bodies you can print for it. I didn't bother doing that after I had it working.

The E3D v6 groovemount is 6mm, but the old style J-head groovemount is 5mm.

I printed a new mount with a 5.9mm groovemount, and my wiggle problems are gone.

Yeah large metal washer on top of the hot end, if you're fitting the hot end with the extruder attached to the printer stick a bit of filament in it to stop the washer falling off. I also used m4 bolts to mount the hot end to the extruder instead of m3, which means the bolts bite into the aluminum of the top of the heat break ensuring a tight fit, just make sure it's straight as you do it up if you go for the wider bolts as it can go a bit wonky.

I'll give those a shot!

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Prusa i3 Rework - Ramps 1.4 - E3d Lite6 - Full Graphic LCD Controller