I overlooked one possibility. Bill's posting earlier has also the idea. EJs are supplied normally locked into neutral position and they are installed normally with locking on. This way you will have the mass issue.

You could support the unit from bottom, install the unit vertical without bolting to the turbine flange and remove the locking devices from EJ. EJ will shorten half mass/spring rate. Adjust the closing gap as Bill recommends. No mass on turbine.

To do above;
- check EJ installation instructions if this is what they recommend/allow
- if installation is with locking on (or no instructions) the supplier has to check the design. EJ is not installed into neutral position. There is a presetting, which has to be considered.

I did a check on the unit shown on my site. It is 54", 10 bar, mass 5000 kg. Installing it vertical without locking would compress the unit about 4 mm. Design movement -12 mm. This specific unit cannot handle the extra 4 mm without a risk. Each design is different and has to be checked.