Installed/uninstalled C-130 DEMO-Speed Hold

Hi,I just signed up in the forum because I need some help! So please hear me out!:)Like I said in my description, I downloaded the Captain Sim C-130 and I liked it, so I went to my airplane folder located the uninstall file and I deleted it from the folder (instructions of the Captain site state that you need to delete the demo in order to purchase the plane) so I wait it a few hours and started to noticed some really odd things!* All planes are in like fast-foward motion kind of behaviour. Right from the moment I am gaining speed to take off, the plane seems to be going so fast already that it feels so unrealistic... and right after I start to gain altitude between 1500-3500 Feet the plane speed indicator goes to 0 and the plane keeps going, like the speed of light or something, well maybe not that fast but, last time I noticed it was 495 knots. even with the Speed Hold set to 285. This only happened after I installed/uninstalled the C-130.* almost all the time I get the Altimeter Flying tip correction message, when before I saw it rarely, maybe once in 12 flights...I can't think of a solution and I need help. I already sent a ticket to the support team at this company, but I might have to wait longer, if they respond that is. Someone said I might have to reinstall FSX, but the problem is that I have too much content installed, and I can't download all this all over again! Is there a way to reinstall FSX without deleting all your planes, for example? I have REX, terrains, planes, etc....honestly,this is my ultimate recreation in my free time, and I am ready to do anything to fix this problem. :( :(