I was reading an Amazon forum and someone mentioned how to convert pdf's, I tried it and it worked, so of course I have to share this wonderful news.
When an author is sending you a pdf or you have it on email and need to forward it to your kindle email in the subject line when you forward you put convert.
Yes, that is it, tried and proven by yours truly.
To be clear you need to send the pdf ebook to your kindle email putting convert in the subject line.
I have had my kindle for 2 years so this should work for all kindle devices. I am able to use all the features, highlighting, bookmarking, change font etc.
It took me 2 years to figure it out but i'm not complaining.