Plug Power has some very big problems.I am not a fan of Plug Power (PLUG -4.94%). While I'm intrigued by the growth prospects of the hydrogen sector, I have specific concerns about its business operations. These issues are why I have never purchased the stock.I do not currently plan to invest in Plug Power. However, there are certain actions the company could take that would make it a more compelling investment. The following changes could shift my stance on this hydrogen stock. Stop diluting investorsOne o ...