dASHBOARD MOUNTING BOLTS BENEATH WIPER CAL PANEL TORQUE SETTINGS?!?!?

Following the replacement of both heater radiator core and evaporator core in my 96 850R estate professionally at a VOLVO garage, 9 weeks later my dash board is making lots of rattling sqeaking noises.
I removed the wiper cal panel to access the bolts and immediately found some where loose, especially the ones on the driver's side. There was quite a lot of freeplay in the dash board, ie moving backwards and forwards I tightened these up knowing very well that they would probably need to be torqued up to some kind of setting as to allow for the cars twisting and movements. The dash is tighter on to the car now but makes horrible cracking sounds, especially with the R's harder ride. Can someone help with these settings or otherwise.
Regards
Ian

Be very careful and do not overtighten !

The dash is held to the firwall by plastic, yes plastic, standoffs. They commonly break over time.

You are very lucky if you were able to tighten - do not push your luck by overtightening.

zzr,

Don't know for sure, but it can't be much. You run the risk of breaking the plastic anchors in the dash.

I did mine several years ago and probably over-torqued them to about 10 ft. lbs. The squeaking is gone but when there is extreme temperature (hot or cold) I still get the occasional "cracking" noise from the dash when traveling the 3rd world roads in Michigan.

Good luck,
Bryan