HI, Have several Mesquite bowl blanks to cut and needed to change the blade on my band saw so figured it is a good time to do maintenance and evaluate. I have a Delta 14” band saw  bought in 1993 or thereabouts, no riser and stock except for the tension adjusting mech. Replaced the tensioning screw with an aftermarket  spring and threaded rod and wheel. Replaced the upper wheel tilting mechanism with identical looking part made of better metal than the original pot metal one, seems to work ok. I’m on the second set of composite guide blocks ( cool blocks) both upper and lower and made a magnet gizmo to keep the dust collecting Shute closed as the clip on original is too weak.
What is the general opinion of these additional “improvements”?
Tension releasing lever
Bearing replacement of cool blocks
Replacing the original vee belt with a link style belt
Thanks, Ed

my 14" saw also has:
riser block
tires
bearing guides
tension spring
link belt
improved fence
quality blade

IMO, these are almost required on all 14" cast iron saws.