On Thursday, November 23, 2017 at 12:20:04 PM UTC-7, wrote:
A new weight and balance, after a tail boom repair, shows that several tens of pounds of trim weight needs to be added to a forward location in order to move the CG back into acceptable range. This fixes CG issue, but are there other concerns with doing this? Would be interested in experience of others.
Tom A

Please specify the glider type. We assume you mean that the c.g. needs to be moved forward into the correct range.

Some gliders have ballast weights that can be placed in the nose or near the front bulkheads, others will have lead epoxied into the nose.