diff --git a/custom-add-ons.md b/custom-add-ons.md
index 57a6724..270dfa6 100644
--- a/custom-add-ons.md
+++ b/custom-add-ons.md
@@ -2,9 +2,9 @@
 
 Add-ons are extra features you can have installed before your Sovran Pro is shipped to you. 
 
-1. There is also Bitcoin Knots Node available to be added instead of the regular Bitcoin Node. Bitcoin Knots allows a special filter to block unwanted, unusable, erroneous data on the Bitcoin Timechain chain.
+1. Since Sovran_SystemsOS runs Bitcoin Knots by default as opposed to Bitcion Core, you can customize your Sovran Pro or Sovran Pro Max node to run Bitcoin Core.
 
-https://bitcoinknots.org
+https://github.com/bitcoin/bitcoin
 
 
 2. By default Sovran_SystemsOS runs LND as the default Lightning node software for BTCpayserver. You are now able to run CLN as the backend to BTCpayserver instead of LND.
@@ -20,19 +20,21 @@ https://github.com/mempool/mempool
 The code will be installed in the `custom.nix` file.
 
 
-The code for Bitcoin Knots is as follows:
+The code for Bitcoin Core is as follows:
 
 ```nix
-services.bitcoind.package = pkgs.bitcoind-knots;
+services.bitcoind.package = mkForce config.nix-bitcoin.pkgs.bitcoind;
+
 ```
 
 
 The code for CLN for BTCpayserver backend is as follows:
 
 ```nix
-services.btcpayserver.lightningBackend = mkForce "clightning";
+services.btcpayserver.lightningBackend = mkForce clightning;
 ```
 
+
 The code for Mempool is as follows:
 
 ```nix