Hey all you primates, I am looking for a little help. I am running a Vannilla R on my Isis and I'm having issues with bottoming out on anything over three-four feet high. A friend of mine mentioned swaping out springs, but I'm not all that familiar with th options availiable. The spring on there is stock, and I can't tell what its rated for. Who's upgraded? What did you go to? And what type of frame is it on (four-bar, single pivot etc..) For what its worth, I weigh in around 225 with gear, and prefer to climb up whatever I'm aiming to descend. Thanks for any input yawl!