LBRY multiplier inform me.

[trustfarm-dev]

I forked to https://github.com/trustfarm/node-stratum-pool/
it has linked multihashing module. https://github.com/trustfarm-dev/node-multi-hashing

I'm testing LBRY (LBC) stratum.

It looks hashing module works well ,
But, Low difficulties share rejected. It may be multiplication problems.
Can you inform how to tune stratum module lbry algorithm multiplier?
Testing Giant-B , 48Gh (other lbry pool mark)

InvalidBlockhash HeaderHash:693410dd41d7bd60c40099c3887d0d8353b8ba1a7b6c90de976b7ae96a2a4033
InvalidBlockhash :52f232fe8ce5ff54d79f99a1a2e4de7235809ced77904afd37f4d3edca77fcb6
^[[32m2018-06-19 21:25:59 [Pool]        ^[[39m^[[3m[lbrycoin] ^[[23m^[[90m^[[1m(Thread 6) ^[[22m^[[39m^[[90mShare rejected: {"job":"4","ip":"xxxxxxxxxxx2","worker":"bQBDD6e8x4He1iavCNn7Zdqo3xTKVH7W3L","difficulty":4096,"error":"low difficulty share of 4.500523363485647e-8"}^[[39m