Irishbob check out this sight from crosman that gb6491 pointed me to. I thought I sent you a private message about it. I have one coming tomorrow. I'll post how it works out when I get the chance. it's made by LPA the same company that makes the original sight on my BEIII but it's adjustable I've seen two posts where folks say it fixed the problem for them and it installed without a problem here is one of the posts read the the last two posts in the thread: http://www.czfirearms.us/index.php?topic=87136.0
Here is a link right to the sight itself. http://www.crosman.com/lpa-mim-rear-sight