I have a 8 month old BM with a phenomenal pedigree that can't mark very good at all. He is a super smart dog that has blown thru training faster than any pup I have trained. He is finishing up swimby and running bird boy blinds with style and handles pressure well. I bought him to train and sell but like him so much I havn't been able to part with. I said all that to say will the lightbulb come on or is this due to immaturity or just something I'm gonna have to really work on. I'm an experienced trainer and have trained many east Texas backyard bred dogs that marked better. I know for the venues I run (hunt test) he can be trained up. Just wanted to get some opinions on marking in regards to a young dog? Never had what I would call a bad marker until now!!!