You say you replaced the front pipes. Did this include the flexible
hoses? If not, it is probably the flexible brake hose on the right
side. This would have been my first guess even if you hadn't changed
so many parts.

The inside of the flexible hose can break down and cause it to form a
non-return valve inside the hose. On a brake line this leads to the
pads dragging or locking on. On a clutch line it leads to the clutch
slipping or releasing very slowly.

It is possible to damage flex hoses during installation. Check to see
it has been installed in a twisted manner or if it appears to have
been kinked.

Otherwise, you can break down the problem this way. Since only the
right hand side is affected the fault must lie at or after the point
where the front lines split from left to right.

You probably have a bit more work to do now than just fix the brakes.
If you got things hot enough to smoke for half-an-hour then there is a
good chance that you need to at least repack the right front bearings,
you may also need to replace the seals. The heat could also have
affected the caliper seals and possible the flexible hose.

Here is another possibility. What if the left-hand side flex hose is
weak and balloons on braking. This would mean that when the brakes
lock on the right would get more of the pressure. Both sides would get
hot but the right might get hotter.

I have seen a case where the brake master cylinder pushrod was not
returning far enough. This left one of the fluid reservoir holes in
the cylinder covered. The result was that the brakes would pump up and
never release. Very embarassing on a race course. Lots of smoke and
very little speed. And very hard to figure out.

Cheers,

Kelley