Oh ic. I think me is trying to cheat the system by getting 90 repair via skill distribution, choosing Jury rigging, going back to skill points and redistributing to other skills, and then without clicking anything try to get the perk. No the game doesn't work like that because when you click back it looses your original choice and you have to click the perks again.
Your wrong, it remembers the perk and let's you pick it without the requirement. I made a thread about it a while ago - http://www.gamesas.com/topic/1397072-a-little-tip-for-everyone-skill-distribution-during-level-up-for-perk-requirements/
I use it for perks which have odd requirements, pyromaniac for example. It allows me to have 45 explosives (which I never use) and the perk.