I have EMT 948 with 929 tonearm.
At first you need to check tonearm lift pad. It shouldn’t interfere to tonearm to go down and to the cartridge needle to reach record surface.
The second is a dynamic VTF setup. You need remove antiskating and set VTF spring scale to zero, then to setup counterweight to hold tonearm in zero balance. Tonearm should to balance like a mechanical scales and the needle should be on the level of record surface. When it is done you can setup VTF by set spring scale to 2.5g. Then double check VTF with electronic or mechanical scale. If VTF is not correct you need to adjust by VTF spring. VTF spring scale can be very inaccurate and I use it only for relative indication.
After VTF is done you can add antiskating.
Regards,
Alex