I have a kama ts354c and have had the steering cylinder mounting bolts work loose. The cylinder was leaking about a year ago and I think the twisting contributed to wearing the seal. (65 hours) and again it was loose (125 hours). I have to lower the front end from the tractor to tighten it and this time I replace the bolts/washers and lock tighten them. I know I should of lock tighten them the first time. I do have a loader and do a lot of rough field work. So if you have a kama ts354c or ts254 check your steering cylinder mounting bolts. And if you find them loose lock tighten them.