My JD riding lawn mower (D130) has crappy front tires. Have had several flats. Now I find at least three punctures from, guess what, puncture weeds. Instead of the usual plug I am thinking of using Slime. Any advice? These are tubeless tires and small (15 x 6). How much sealant should I use in each tire? Will it work to seal these miniature pin holes? Slime seems to be the brand that Walmart carries. Is there a better brand? TIA.