Lead replacement and/or fuel system cleaner necessary

Hi together, I’m new here and last week – after 30 years – I bought another Kawasaki GPZ 1100 UT, year 1985 in red. Was just my favorite moped. I always regretted the sale…Now finally there is another one in the stable! Despite several other bikes in the meantime. I quickly found no posts that concern exactly my questions. Maybe also just not the right search word. I ask for understanding and tolerance. 😉 I’m still familiar with it (had the 550 and 750 at the time), but when I was refueling today, I’m a bit unsure. Especially if 1st lead replacement makes sense and -at least during the winter break the 2nd addition of fuel system cleaners for the injection pump makes sense? Is there both from various suppliers. 😉 How are your experiences with it? How do you see it? !