I seen the topic of blade tension, I also was seeing my blade tension getting worse, so I decided to take out all the blade tensioning screws (top & bottom).....roughed up the ends of all 4 screws on some sand paper, re-installed all 4, the short ones need some thread lock on the threads to keep them from moving back out when in use.......and WOW!! What a difference!! BTW...I have a DW 788. I have cut over 300 projects this year and have never messed with the bottom 2 screws. I hope it lasts a while....time will tell... Try this....it will help. Smitty