Squeezers can have adjustable sets. There are commercial adjustable sets for c-yokes. The commercially available c-yokes would not reach main spar AD5 rivets. I made my own c-yoke and adjustable set; I was annoyed that it kept changing settings between rivets. I made this copolymer plastic guide that keeps it from rotating.

The problem is that an ad4 rivet is just on the edge of what can be done with a tatco squeezer. The squeezer can reach the rivets on a rear spar. It simply requires to much effort to squeeze the rivet. I could use a rivet gun to tune up the rivet latter, but chose to touch up the rivets with the squeezer. I have seen others modify their tatco squeezer an make the handles longer. That is a reasonable approach. This would only work on the capstrips of the rear spar not the main spar.

This only applies to the rear spar. The main spar is beyond the ability of a pneumatic or hand squeezer because it has AD5 rivets. Also no commercial yoke could clear the main spar web. Only a c-frame or a rivet gun can set the AD5 rivets.

I do not own a cleavland main squeeze or a longeron yoke. That would be the best tool for the job. But, that setup could only be used on the rear spar, since the web of the main spar is to big for the longeron yoke. Also, it can only reach the rivet from one direction. Hence, you would have to rivet the spar laying in the direction that it is when mounted in the airplane. It is not practical to rivet in the level flat condition with a longeron yoke. It could be done it just would not be comfortable.

In all cases both the main spar and the rear spar could be done with a rivet gun. The only limit is that that is a two man job. Some one has to hold the gun, and someone has to hold the bucking bar. I was not successful using a rivet gun doing it as a one man job.