Pinched lense- can it deform lense?

I have a Borg 101ED that I recently collimated and after checking it using a Pico Star indoors, the diffraction rings indicate a small amount of pinched optics. I prefer to leave the collimation screws slightly on the tight side in order to avoid having to recollimate. I am wondering if leaving the lense with stress on it could deform the lense over time? If there is any risk of this, I will loosen up the screws and take my chances on having to collimate more often. Thanks.

Dave Adams

Dave,

Let me get this right... You prefer to use the scope with the lens pinched only so you don't have to re-collimate in the future? Why collimate to begin with, if you don't care how it performs? While I don't believe it will cause a permanent distortion of the lens, I think the lens (especially the soft ED glass) can crack under extreme temperatures or temprature change. I would loosen the screws a bit, it should still keep collimation pretty well for a long time.

oren.