Hi Jason,
Lex - one of the group members is parting out an FRG-7. His website is https://www.ph2lb.nl/blog/index.php?page=for-sale-frg7-parts .
I see one eBay seller in Hong Kong has sold 50 sets of 3 2SK19 for less than $10 and has good feedback.
eBay Item # 172163056900.
73
Roger VE7LB
