Your very best bet would be to contact Peavey.
"Customer and Technical Support
If you have questions concerning product operation, support and warranty, contact one of our Customer Support Representatives toll free at 877-732-8391, by email at email@example.com, or by using our Forums.
To order replacement parts, please call us at 877-732-8391 (toll free in the US) or 601-483-5365. The Parts Department extension is 1386. Our business hours are 8 a.m. - 5 p.m. Central Time, Monday-Friday. Hold times may be long during peak hours. If you have to wait on hold, feel free to leave a name and number and one of our Parts Sales Coordinators will contact you as soon as possible. Payment can be made via credit card, or we can ship COD to a place of business only. "