Reliable source of RAM for Macintosh 128K - also, socket or not?

[Byrd]

Hi all,

Nine years ago I resurrected a 128K by replacement of two 64K 4164 RAM modules in a stock 128K, it is now displaying a Sad Mac at another memory location ... and probably more.

Would you recommend I desolder all and add sockets for new 4164 64K modules x 16; and if so where do you recommend to purchase them from?

Thanks

JB