New bolts

As long as you've Alu somewhere in the same electric circuit as the Ti, it "should" corrode first... should being the operative word here lol.

Metallurgy is a huge considering in watercooling loops for computers, a lot of Chinese companies build Alu cored radiators with copper end tanks. Then, pretty much everyone uses copper water block or nickel coated copper blocks, its an absolute nightmare to find parts made of only copper to avoid corrosion issues.
 
It was a lot of work. But now I know how to do it if I have to do it again. That was my first go at changing tires.

The bigger the tire the easier it is.
Semi truck tires are all done by hand. Since I did my truck tires I figured I'd try a car tire. It worked but everything is tighter and harder to get into place. So I imagine a bike tire would be a pain.
 
An interesting twist on the bolt replacement. When I was an Instructor at a community college, we used to bring in a Fastener company to do a demonstration. They torqed a 3/4" nut and bolt combo to 75 LB/FT and had a device that showed it was holding at 75 LB/FT. then they loosened it and retorqed to the same setting. The device only registered at about 1/2 the original pressure. Each retorqe showed a loss of holding power. the moral is that threads stretch and do not hold as well as when they are new. even over torqing will not bring back the original pressure.
 
Oh is the code not working? Apologies if it's not, they sent out an email notifying previous Ti buyers of it.