diff --git a/inventoryManager.lua b/inventoryManager.lua
index 9ee7625..5879999 100644
--- a/inventoryManager.lua
+++ b/inventoryManager.lua
@@ -38,33 +38,15 @@ local function scanInventory(deviceName)
 end
 
 -- Build a full catalogue: itemName -> { {chest=name, total=N}, ... }
--- Scans all chests in parallel for speed
 local function buildCatalogue()
-    local chests = getChests()
-    local results = {}  -- index -> { chest=name, contents={} }
-
-    -- Build parallel scan tasks
-    local tasks = {}
-    for i, chest in ipairs(chests) do
-        results[i] = { chest = chest, contents = {} }
-        tasks[i] = function()
-            results[i].contents = scanInventory(chest)
-        end
-    end
-
-    -- Run all scans simultaneously
-    if #tasks > 0 then
-        parallel.waitForAll(table.unpack(tasks))
-    end
-
-    -- Merge results into catalogue
     local catalogue = {}
-    for _, result in ipairs(results) do
-        for itemName, info in pairs(result.contents) do
+    for _, chest in ipairs(getChests()) do
+        local contents = scanInventory(chest)
+        for itemName, info in pairs(contents) do
             if not catalogue[itemName] then
                 catalogue[itemName] = {}
             end
-            table.insert(catalogue[itemName], { chest = result.chest, total = info.total })
+            table.insert(catalogue[itemName], { chest = chest, total = info.total })
         end
     end
     return catalogue
@@ -162,32 +144,18 @@ local function drawDashboard()
     monCenter(3, string.rep("\140", math.min(w - 4, 60)), colors.cyan, colors.lightBlue)
 
     -- ===== Storage capacity bar =====
-    -- Count total slots and used slots across all chests (in parallel)
+    -- Count total slots and used slots across all chests
     local totalSlots = 0
     local usedSlots = 0
-    local capTasks = {}
-    local capResults = {}
-    for i, chestName in ipairs(chests) do
-        capResults[i] = { total = 0, used = 0 }
-        capTasks[i] = function()
-            local inv = peripheral.wrap(chestName)
-            if inv then
-                local size = inv.size()
-                capResults[i].total = size
-                local contents = inv.list()
-                for _ in pairs(contents) do
-                    capResults[i].used = capResults[i].used + 1
-                end
+    for _, chestName in ipairs(chests) do
+        local inv = peripheral.wrap(chestName)
+        if inv then
+            totalSlots = totalSlots + inv.size()
+            for _ in pairs(inv.list()) do
+                usedSlots = usedSlots + 1
             end
         end
     end
-    if #capTasks > 0 then
-        parallel.waitForAll(table.unpack(capTasks))
-    end
-    for _, r in ipairs(capResults) do
-        totalSlots = totalSlots + r.total
-        usedSlots  = usedSlots  + r.used
-    end
     local freeSlots = totalSlots - usedSlots
     local usedRatio = totalSlots > 0 and (usedSlots / totalSlots) or 0