i know that type of smoothing on the telescope a few times, I didn't now how to bevel! Just learned it today...
(But thanks anyway, really appreciate how you help me (this is not the first time )

With the tank, I didn't do much (actually, I didn't get farer then make the image"planes" (nurbs surfaces) because I spent most of my time with practicing for 3 exams/tests, some on making a game for school (extra marks for the flash unit we are doing (it could technically count as a test) and the remaining time on the telescope (which, as you can see, was not very much....)
Sorry about that... :shakehead

And there are two different caps, do you mean the one where the ocular is, or the one in the back?