I run a bipod extension kit from Doug at Rock Lake Rifle Range. Rock Lake is a national PRS venue and Doug's a great guy. You keep the standard feet of the Harris but it adds a screw fitting that increases height by 1" or so. Then you can swap out for spiked feet or additional leg extensions if you need more height. Most of the time the extra 1" comes in handy and does the job.
https://rlrr.configio.com/
You can purchase at the link above.