You are welcome DBII.I hope I really helped.
To be honest I always try to avoid a putty for seams in these places.The better way ( in my opinion ) is to apply at edges of two halves a bit much glue and then when these halves are put and pressed together , let the glue well up a bit.Then I put away these glued pieces and wait when the glue is hardened ( usually the next day).Then these joints can be filling ,sanding and polishing with files, sandpaper and felt.