My MF was converted to 12v years ago. For 20 years no problems.
Recently I have gone through four starters. When I engage the current starter, it worked 3 times and the 𝟒𝐭𝐡 𝐭𝐢𝐦𝐞 𝐢𝐭 𝐰𝐚𝐬 𝐝𝐞𝐚𝐝.
I think my 12 volt battery is burning something out in the starter.
𝐀𝐧𝐲 𝐭𝐡𝐨𝐮𝐠𝐡𝐭𝐬 ?