Hi guys
Ok, well... after all your great advises and comments I decided to give a try to a V-block filter and moved on a not expensive solution from Orion.
Instead and in regarding the focuser it was a bit more challenging situation.
Quite hard to find something that I really like it. Most of the focuser available in the local stores are not having the finderscope dovetail attached to the top part like the focuser that comes originally with the scope. So I had no choice (such good excuse) than to order the Moonlite CF ...
Cheers, Cristiano