Having a problem with a Marbles tang sight purchased a few months ago. Have called Marbles a number of times and have yet to actually speak to a person. Left messages, no call back. Sent email, no reply. Has anyone else experienced this? Need to get the issue addressed but if this is is what I can expect for customer service, it is probably going in the trash and purchase something else. Another competitor at a match I shoot every month was having a similar problem with his and said Marbles took care of it. Did not get any details on how he accomplished this.