So I was out plowing yesterday and my reverse lever on my 88 Moto4 YFM 350 ERU broke off. Looks like the plastic got too cold and gave up on me. I've been searching all morning and this doesn't look like an easy part to find. I found one on cyclepartswarehouse.com for an 89 but I'm not sure if they are interchangeable. Or if I can take a "drive selector" off any other year and have it fit.

Can I just change the plastic lever that broke or do I need to change the entire assembly? By the way, my reverse lever is the one that has a push button on the side that you would push with your thumb. The only ones I can find on ebay are the ones you pull the button with your fingers or the one from the warrior that year. Are any of these interchangeable?

Thanks
Kyle