Tillers

I bought a DRT900H tiller 3 months ago. It has about 10 hours use to date. It is very difficult to shift into gear. In addition, the transmission makes a grinding/scraping noise, even when I push the unit forward with the transmission in neutral with the engine off. Based on the number of complaints I have seen on the web, is there something fundamentally wrong with the design of the transmission in this unit? Has there ever been a recall to fix this problem?