Apparently, I'm not as stupid as I thought and apologies to supernova, Jahred.F and blueflash.
I pulled my trigger group apart today to do the auto bolt release mod and it turns out that the spring was not hooked up properly to the bolt release. This was why mine was so hard to release, it only had gravity helping it out and no spring. With the spring installed properly it works much better and is not a source of frustration. I bought the rifle used and had never used the BHO on any other 10/22, so had no idea how it was supposed to work. It appears that the PO had been into the trigger group and had issues with proper reassembly. Go figure.
All that said, I did the auto release modification anyway because I like the BHO to release with a slingshot motion, the same as semi-auto pistols.
Mark