diff --git a/mx350.md b/mx350.md
index 3effa46..2a399ca 100644
--- a/mx350.md
+++ b/mx350.md
@@ -1 +1,11 @@
 # MX350
+
+## Motor upgrade
+
+* I toss my old 500 or 650 dc motor in the 350.
+* Need to weld on the foot mounts from the old motor and add some spacers but otherwise works well.
+
+## Brakes
+
+* My kid's hands were too small to pull the brake handle so I replaced the big one with [this smaller one](https://www.amazon.com/gp/product/B06XXHL4ZS/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1).
+
diff --git a/rsf350.md b/rsf350.md
index 8c0affb..e6b778c 100644
--- a/rsf350.md
+++ b/rsf350.md
@@ -1 +1,10 @@
 # RSF350
+
+## Motor upgrade
+
+* I toss my old 500 or 650 dc motor in the 350.
+* Need to weld on the foot mounts from the old motor and add some spacers but otherwise works well.
+
+## Brakes
+
+* My kid's hands were too small to pull the brake handle so I replaced the big one with [this smaller one](https://www.amazon.com/gp/product/B06XXHL4ZS/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1).
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