How hot are you getting It?
just using a propane torch like this.....
just aim it down and put the chisel under it and let warm for a couple.... not glowing or nothing.... a 5 min preheat would do good. then cut a couple then go back for a min then another couple lugs... thats why i made another one.. just lay it under the heat while your cutting the other one..
here is a vid i found that made me do this.. and yes ... it works that fast... cept i musta got mine hotter cause mine cut better....(maybe mine was sharper)
http://www.youtube.com/v/IGNPjp0Feq4?fs=1&hl=en_USevery place i have been, they have said especially on tsl's that it makes the tire perform so much better.... i dont doubt it as those big tread blocks can finally flex now.....
i just want to be able to get some more tread/life out of my tires.... so i need a groover to take the rubber down to the skin...
sorta like these infamous tires