The R stands for "resistor"...you likely have resistor caps and resistor plugs. (Not right for an old CB.)
Take a look at your plug caps and see if they are resistor caps.

Change to the correct plugs. (D8EA) You can get them from CDN Tire.

It may not help but with too much resistance you end up with a weak spark.
(Fix the obvious problem first.)

Check your point gaps, they should be about 12-14thou. 12 will fire earlier, 14 may be too much, at least it is on my bike.
You can also static time your points with a voltage probe, and then once it is running time them properly with a timing light. It is all in the manual under the 3000 mile tuneup.