Hello, this question is for my dad who is the proud owner of a kubota tg1860 diesel.He is becoming increasingly unhappy with the rocker style control pedal.I was wondering if there was a conversion available for this where he would have two seperate pedals or a lever to control speed and direction.He is getting up there in years and it's just a comfort factor i think with him.Any help would be appreciated thank you.If we had to make a few modifications on our own that would be o.k too.