Hi Semi43, given that your injury has moved from acute to chronic you may find some relief from a good trigger point therapy type treatment. If the therapist is experienced they may well find what in Chinese Medicine is often referred to as "stagnant energy", which is essentially damaged tissue or scar tissue which was not cleared from the original injury site - hence the injury has failed to properly heal and consequently recurs. As you noted rest may not help, however possibly reducing your weights for a period may be enough to not aggravate the injury