Take profit missed by a pip, What would you do?

The first thing you have to say, if your consistently missing your TPs by a one tick or even a few ticks, your system is working. Remember the market isnt perfect and adjusting, your TP/SL/TS or whatever other tools are used being able to capture over 85% of a move is most traders dream, so your obviously doing something right.

Instead of trying for that full 100% back it off a bit hahaha.

Instead of 60 go for 55.

Were talking such a small percentage, in the long run you will always make more pips.

by 1 pip .. back to the drawing board .......... over houl the engin , repaint the dented , tinted all glass

I don't think in accurate numbers, one pip is nothing and basically tells me that the target was reached. What are you waiting for? You have lets say 1% more profit to expect vs. 100% of your expected loss. On the other side if your SL is close to be called you have 1% more losses vs the potential off 100% of your profit.
This is my opinion but 1 pip should be an unimportant amount of money no matter what or how you trade.

If you are close to a TP you limit yourself anyway. Sometimes holding on trades can be beneficial but I think that taking a profit is never a bad decision. Maybe not the best, but definitely not the wrong either.