Newish Idler arm has a lot of slack/wobble

I replaced the idler arm and pitman arm on my 70 duster to flip the steering link for it to go through a 10 qt pan. Idler arm is the suspect!!! The parts were relatively new from the guy I bought the motor and set up from. The old one I removed was tight and stiff, no play whatsoever. The new one I installed has some slack and that just does not seem right. When I asked the gentleman who I bought the complete set up from he told me that his original was just like that and he bought this one to try and correct it but when he replaced it it had the same problem. He ran it anyway the car would hit the 130s every pass and said to drive smoothe and straight. He made the comment that when the wheels came down from hard wheelie in slow motion video the tires would wobble for about .5 seconds. But not noticeable in the car only on slow motion video. I made some washers to fit the metal bushing rod the bolt goes through to maybe stiffen it up but was minimal. Should I make thicker washers to work with this or is this just inevitable that it will have that slack? Another option is what bushing works the best to correct this? Thanks in advance!!! The first photo is the new arm installed with only the bushing as its intended and the old one laying next to it. The second and third is uninstalled with the washers I made.

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