OK, here's a coding with the in between lines snipped out. I should remark to that I didn't remember I had earlier tried to use Morphing Clothes to deal with the morphs, but that was when tI was still using the chest group for part of the model. The code is still there but it's not doing anything now. I think.

actor BODY:1
-snip-
valueParm Bulk
{
 name Bulk
 initValue 0
 hidden 0
 forceLimits 1
 min -1
 max 2
 trackingScale 0.04
 keys
 {
  static 0
  k 0 0
 }
 interpStyleLocked 0
}
actor chest:1
-snip-
valueParm FBMBulk
{
 name Bulk
 initValue 0
 hidden 0
 forceLimits 0
 min -100000
 max 100000
 trackingScale 0.02
 keys
 {
  static 0
  k 0 0
 }
 interpStyleLocked 0
}
-snip-
actor 1Chest:1
-snip-
rotatZ zrot
-snip-
valueParm FBMBulk
{
 name Bulk
 initValue 0
 hidden 0
 forceLimits 0
 min -100000
 max 100000
 trackingScale 0.02
 keys
 {
  static 0
  k 0 0
 }
 interpStyleLocked 0
}
valueOpDeltaAdd
Figure
BODY
Bulk
deltaAddDelta -2.15517