I would not advise setting high pressure standby above specs. We have added extra lift cylinders to these machines for a number of years in situations such as this. Your dealer should have a product support catalog. It shows a third cylinder lift kit 137856A2 for a 60" feeder w_o rock trap and a 137857A2 with rock trap. Includes all brackets safety etc. and will require some welding. Be sure and disconnect both batteries when doing this so you don't fry the header controller, instrument cluster, and ac controller. I would suggest that you order two kits and install the second on the right side. Not that you need the capacity, but to prevent twisting of the feeder. There is plenty of capacity in the header lift circuit with the flow controls under the armrest to handle the extra volume and still maintain adequate speed. If you are running a 40' head you might also be interested in the cruved bat spreader kit if you don't already have it. for a 88 series machine the part number is 400505A1. There is also a speed up kit and that number is 896182. Hope this helps.