if you don't want to disturb the system and you have some spare tubing try this
1) cut a small section (this length depends on the stress on the tube)
2) make a cut the length of the small section to open it up,
3) fit around the kinked on the inside of the curve, with the open part on the outside of curve.
4) relieve the stress on the hose by staightening it with your hand then ty-wrap the repair section in place.
some pictures of a small demo piece i made to try to explain what i mean.
you can see the strengthened section is curves less.
Hope this helps
Ps very nice build btw