EK states on their website:

" The base plate is made of electrolytic copper lapped and polished to +/- 0,0007 mm flatness"

But mine definitely has a raised area in the middle. It seems to correlate to the area of the micro channels cut in the base. Anybody else notice this?

It looks like when it is manufactured, they lap and polish the base first and then cut the channels afterwards which then distorts the base a little. Here are some pics of a new one:





It is preventing me from getting a good mount.

Thx
Dr_DX