The maximum value for the repair points is something like 10000 points (AFAIR). You do not need to "save" any - it simply will not go beyond the upper limit.
And if you have that many points in the bank, then you don't have any build/repair problems! .
Heh if it's in the 10000 range then I guess I'm alright. I had a core unit strength of about 1000 and was wondering if the max was relative to that or not, but a "repair pool" of 10 times the base value of my core strength should be enough I guess Thanks for your reply!