From 2015 till today. What was the longest period the motor was not cranked? With only 40 some hours there are some gaps. My opinion = get a pre buy inspection done by a neutral party. Lsrm, A&P, an owner operator who is familiar with rotax and czeck sport airframes. Check the logbooks, factory paperwork, maintenance records. Make sure its up to date with the ICA. What SB’s and SA’s have been complied with. And when and by who. Again just my thoughts. And also AD’s. I found two already