This would make an affordable, DIY pinning kit:

https://www.ebay.com/itm/Schlage-Rekey-Kit-Bottom-Lock-Pin-Refill-Packs-Contains-25-pins-each-size-0-9/264587514666

https://www.clksupplies.com/products/standard-springs-long-for-schalge-weiser-kwikset

https://www.clksupplies.com/products/standard-springs-short-for-imported-and-kwikset-locks-2

https://www.clksupplies.com/products/american-master-padlock-cylinder-spring

https://www.clksupplies.com/products/lab-universal-spool-pin-100-pack-choose-size?_pos=5&_sid=af21f2359&_ss=r (Go for a middle length)

https://www.amazon.com/Darice-Deluxe-Organizer-Storage-Supplies/dp/B000WWGABE