0.94 Power steering pump question

Im in the midst of rebuilding ps pump. Pretty much done and now I notice the flow control valve is slightly different than the one listed in both 67 and 69 Factory Service manual. Here's the issue, if you take a look at a part of the valve on the right, you will see it has a small screen on the end of it...and you know what the screen has? Yep, a very small hole....the hole probably equals about 5% of the total screen size. Should I be concerned OR can the nut at the end be removed and the screen replaced??

I am not 100% what year this pump is, BUT it is identical to the 0.94 in every aspect except for the slight differences in flow control valve.

Ideas/input?

Thanks
Steve