Some good work done George but as mentioned by JD air lines are not best suited to clean electrical equipment, apart from them being too harsh there is also a risk of moisture being emitted from the hose.
The temps do look a lot better now and by fitting an appropriate quality rear exhaust fan you will be able to drop the temps even further.
1: Check the the BIOS to see if the MBs thermal shut down setting has been disabled.
2: Check the MB for either 3 or 4 pin fan headers.
3: Post back with an update.
To help with controlling fan speeds as also suggested by JD see guide here
Please note that not all fan speeds can be manually controlled using Speedfan or any other software, typical examples are 3 pin type fans, CPU cooling fans that are controlled by the MBs BIOS settings and the internal fan of a PSU.