Dinger,
Take a good pic of the forend and send it in an email to H&R, ask them to replace it with a good forend.
My carbine forend is perfect, there's no reason for them to not replace shoddy work like that once they know about it, their QC leaves a bit to be desired too often.
They damaged my BC butt stock when it was there for barrel fitting, I emailed them a pic, they sent me a new stock, I think it's worth a try in your case.
Tim
hr1871@hr1871.com