As Hunter states the shift points where changed because of external engine issues. Changing the valve clearances themselves did not cause the higher shift points.

With proper valve clearances the engine may generate a little more noise as you have introduced clearance where there was much less. That portion could be considered normal I would expect.

Anyways it is much better to have proper valve clearances than not to. Believe me you will hear absolutly no differance at 70 miles per hour if you can hear yourself think at all.

Good practice if you found you had to move the adjustments quite a way to get normal clearances is to at least check the clearances again 500 miles later.

If you check and adjust where required every 15k miles from that point forward no recheck should be required. Too many of these cars have not had the clearances checked for far too long a time.

Consider checking out you fuel supply pressure at a future date on your 616 engine. That has nothing to do with your current post but is a wise thing to consider doing in my opinion.