Nice Fillet
A boat builder once gave me great advice for using sikaflex and creating a nice fillet that worked really well on my canopy.
1) Glue small squares of rubber hose of appropriate thickness for part standoff as per sika instructions.
2) Clamp the canopy to the roll bar and pick a bolt socket that suits the fillet radius that you want in the particular area.
3) Using the socket with carbon paper wrapped around the socket, run the fillet dry with no sika to scribe the fillet radius tangent point on the two parts in-situ.
4) Tape the scribed lines with 3 layers of good electrical tape
5) Scuff parts as required for sika adhesion and clean using prescribed sika cleaner
6) Remove the first layer of electrical tape and prime with prescribed sika primer
7) Once the primer has flashed off, remove the second layer of electrical tape.
8) Apply sika using using the caulking gun and nozzle.
9) Using the same socket diameter as step 3), wet the socket in a bucket of water and create the fillet that you want.
10) Once the sika has partially set (approx 4-6 hours dependent on temperature and humidity), remove the final layer of electrical tape.
With this method, no touch up of the fillet is required. Also note that sika can be sanded although I would not recommend this process to create the fillet radius that you want to end up with.
Best of luck.